Double-header pump jack



Dec..31, 1929. Y G, B, BURCH 1,742,055

DOUBLE HEADER PUMP JACK Filed Feb. 28, 1928 2 Sheets-Sheet l .5 m I \\i Hao/gc ,Bam/7,

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Dec. 31, 1929. Q B, BURCH 1,742,055

DOUBLE HEADER PUMP JACK Filed Feb. 28. 1928 2 sheets-sheet 2 Patented Dec) 31, A1929 f UNITED STATES GEORGE BURCI-I, F BLAKE, NEBRASKA DOUBLE-HEADER rUMr .TACK

Application filed February 28, 1928. Serial No. 257,595.

This invention relates to the class of pump jacks and pertains particularly to a new and improved type of jack designed for manual or mechanical operation.

Another objectof the invention is to provvide a jack structure whereby a plurality of pumps may be worked simultaneously.

A still further object is to provide a pump jack structure of simple but strong and durable design and comparatively inexpensive to manufacture and set up.

Numerous other objects and advantages of the present invention will become apparent as thedescription of the same proceeds and the invention will be best understood from a consideration of the following detailed description taken in connection with theA accompanying drawings forming a part of the present specification, with the understanding,

however, that the invention is not confined to any strict conformity with the showing of the drawings, but may be changed or modified so long as such changes 0r modifications mark no material departure from the salient features of the invention as expressed in the appended claim.

In the drawings: Figure 1 shows the jack structure embodying the present invention in side elevation,

Figure 2 is a rear elevational view, and

Figure 3 is a top plan view of the structure. Referring now to the drawings in detail wherein like numerals of reference indicate corresponding parts throughout the several views, the numerals 1 indicate a pair of pump casings each having a discharge spout 2 and a plunger rod 3 extending from the upper end thereof.

l/Vhile applicant has shown two pump casings it is, of course, to be understood that he does not limit himself to the use of the jack in this manner, for it will be readily seen that a single pumpcan be operated with the jack as readily as two or more than two pumps may be operated if found desirable.

The jack structure comprises a frame embodying a pair of vertical standards l which are secured to the base or floor 5 a slight distance behind the pump casings. As shown in Figure 2 these uprights or vertical members are arranged in spaced parallel relation and each has secured to the upper end thereof, one end of a horizontal bar 5 which is directed toward and secured to a pump casing as clearly shown in Figure 3, that portionv of each bar 5 which contactsrwith a pump casing being madesemiircular as indicated at 6 to lit about the casing body.` The free forward ends of the bars 5 are directed laterallyv as indicated at 7 and each is secured 60 at its forward end to an? inclined brace bar! 8,

adjacent the upper end of the same as clearly shown in Figure 1. The s'e brace bars 8 each have the lower end secured tothe floor 5 at A Cl a point rearwardly of the uprights l and eachI 65 extends across anupright at an upward inclination and secured thereto as indicated at 9, spacing members 10 being positioned between the inclined bars 8 and the upright bars l as shown in Figure 2. Additional 70 lateral brace bars 11V are provided each of which has one endsecured tothe floor `5 whilethe upper end is secured to an inclined bar 8 at the point 9. From the foregoing description it will be readily seenthat there is thus provided a pair of frames each comprising a triangular upper and asubstantially triangular lower portion, the lowerportion being secured to the Hoor 5 in the manner described.

' The two sidel frames are drawn together by means of the tie bolts 12 these bolts engaging at their ends the horizontal bars 5 on opposite sides of the pump oasings 1.

Upon the lower portion of each bar 8 a bearing block 13 is fixed, in which bearing a shaft 14 is mounted, the shaft extending across and connecting the bars 8 in the manner shown. Each end of the shaft 14 carries `upon the outside of the pump jack frame a belt pulley 15 over which belt driving means may be engaged.

The horizontal beams 5 of the frame structure each supports a bearing 16, adjacent its` rear end and mounted in these bearings to extend between the beams 5 is a crank shaft 17 having a pair of cranks 18 therein. One end of the crank shaft- 17 is extended a substantial distance laterally of the jack frame G1100 structure and has mounted therein the large belt pulley 19 and the crank handle 20.

The upper ends of the bars 8 are connected by the rod 21 and upon this rod there is pivotally mounted the ends of a double bar operating handle or lever 22 to the intermediate portion of each of which the pump rod 3 is connectedias indicated at 23, being positioned between the bars as shown.

Each of the handles 22 has the two bars thereof connected at their other ends and has pivotal connection at this end With one end of a crank arm 24, the other end of the crank arm being formed to provide a bearing 25 which is designed to receive one of the cranks 18 lof the crankv shaft- From the foregoing description itwill be readily seen=that with the jack structure described,rarranged in the proper position and connected .with the pumprods constant reciprocator-y motion-can be transmitted to the rods Abyrotating thewheel 19 to actuate the crank Shaft 17. If desired, a-belt can be placed about IandE over the adjacent lower pulley- 15 and 25` power transmitted to the structure by connectinga drive belt t-o the other one of the pulleys 15. Y

What- I claim is:

A pump jack of the character described, oomprisinga' frame consisting of spaced parallelupright members designed to be positioned adjacent a pump body,4 bar members connecting said upright members with said adjacent pump body,.inclinedy brace bars eX- tending at antangle upwardly and across said upright bars, a crank shaft mounted upon said cross connecting. bars,A af pumpVV rod actuating handle having pivotal connection at one end with the upper end of said inclined brace bars andY adapted for connection intermediate its ends-with a pumpv rod, means for connecting theother end ofsaidpump rod actuating handle with said. crank shaft, and means for transmitting rotary motion to the crank shaft.

In testimony whereof I aflix my signature.

GEORGE B. BURCH. 

